[tx-simulate] how to get the txBytes data

[marslavish]

Context: I was fixing the max button issue from the stake-tokens example (to get the actual max amount which is the available balance minus the gas fee), and I noticed that Keplr uses this request /cosmos/tx/v1beta1/simulate to estimate the gas probably, but an uint8array type of data needs to be passed into the txBytes property

Question: how can I turn the transaction message (or any other data needed) into the uint8array data?

[webmaster128]

You need to encode the transaction here. We wrap this API in two times to offer a useful API:

• https://github.com/cosmos/cosmjs/blob/v0.30.1/packages/stargate/src/signingstargateclient.ts#L174-L191
• https://github.com/cosmos/cosmjs/blob/v0.30.1/packages/stargate/src/modules/tx/queries.ts#L47-L75

[pyramation]

thank you @webmaster128 :)
cc @marslavish

[marslavish]

Thanks! I'll check it out